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>it_uniform_quantizer_new_from_center</H1
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><H2
>Name</H2
>it_uniform_quantizer_new_from_center&nbsp;--&nbsp;create a uniform scalar quantizer from center</DIV
><DIV
CLASS="REFSYNOPSISDIV"
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NAME="AEN10603"
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><H2
>Synopsis</H2
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include &lt;it/quantizer.h&gt;
      </PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void it_uniform_quantizer_new_from_center</CODE
>( double center, double step, double factor
        );</CODE
></P
><P
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><H2
>DESCRIPTION</H2
><P
> This function creates a new uniform scalar quantizer object from the center of the  quantization codebook <CODE
CLASS="PARAMETER"
>center</CODE
> (i.e. the reconstruction value corresponding to the symbol <CODE
CLASS="PARAMETER"
>0</CODE
>) and the stepsize <CODE
CLASS="PARAMETER"
>step</CODE
>. The <CODE
CLASS="PARAMETER"
>factor</CODE
> arguments is used to create a dead-zone around the central reconstruction value, that is the bin for the <CODE
CLASS="PARAMETER"
>0</CODE
> symbol is <CODE
CLASS="PARAMETER"
>factor</CODE
> times the size of the bin for other symbols. For classical uniform quantization it is set to 1.0, whereas dead-zone quantization usually refers to <CODE
CLASS="PARAMETER"
>factor</CODE
>=2.0.  </P
><H2
>RETURN VALUE</H2
><P
>    
   </P
><H2
>EXAMPLE</H2
><PRE
CLASS="PROGRAMLISTING"
>&#13;#include &lt;quantizer.h&gt;

...

/* create a new uniform quantizer with step 1/256 centered on 0
   with a dead-zone of twice the step size                      */
it_uniform_quantizer_t uniq =
      it_uniform_quantizer_new_from_center(0, 1/256., 2.0);</PRE
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